LPC55s69 PUF functionality

[satsok_n]

Hi,

I am kind of new to the PUF consept. I am using the drivers>PUF example with LPC55S69.I have 3 questions. First, If I use the same activation code after the enroll to start the PUF means that I would have same SRAM cells values. Secondly, how do I get the same intrinsic key to use after I restart the device?. What is the actual meaning of keycode?

Thanks

[Alice_Yang]

Hello satsok_n,

First, If I use the same activation code after the enroll to start the PUF means that I would have same SRAM cells values.

->> Yes.

Secondly, how do I get the same intrinsic key to use after I restart the device?. What is the actual meaning of keycode?

->> About these question, recommend you have a look at the AN12324

https://www.nxp.com.cn/docs/en/application-note/AN12324.pdf 

BR

Alice

[satsok_n]

Hi

Is there any way to have direct access and read fingerprint? Furthermore, do I have knowledge of Internal functions or am I able to change them?  

[Alice_Yang]

Hello satsok_n,

NO.

BR

Alice